2024 - dtm variant -27

dtm-2024 variant-27 1. hozirgi davriy sistemada nechta p-element mavjud? a) 28 b) 14 c) 36 d) 40 2. cxhy ning to’liq yonishi uchun 0,8 mol kislorod sarflanib 10,8 g suv hosil bo’ldi. cxhy ning molyar massasini (g ∙ mol -1 ) hisoblang. a) 56 b) 72 c) 70 d) 58 3. as2s3 + hno3  h3aso4 + so2 + no2 + h2o ushbu oksidlansih-qaytarilish reaksiyasida 0,3 mol sulfit angidrid hosil bo’lsa, oksidlovchining massasini (g) toping. a) 492 b) 138,6 c) 126 d) 246 4. eritmada k2co3 va kcl massalari 13,8:14,9 nisbatda 55,2 g kaliy karbonat saqlagan shunday eritmaga qanday massada (g) 14,6% li xlorid kislota eritmasi qo’shilsa, dastlabki tuzlarning miqdorlari (mol) 1:6 nisbatda bo’ladi? a) 100 b) 150 c) 200 …

This file contains 2 pages in PDF format (211.0 KB). To download "2024 - dtm variant -27", click the Telegram button on the left.